Electron drops inherited HTML sandbox restrictions for popups opened through OpenURLFromTab
### Impact Popups opened from a sandboxed iframe through a link (for example `target="_blank"` or a middle-click) did not inherit the iframe's HTML `sandbox` restrictions. Content that was meant to run sandboxed could open a popup with the embedding app's full origin, gaining access to that origin's cookies, storage, and same-origin scripting. Apps are only affected if they embed untrusted content in iframes sandboxed with `allow-scripts allow-popups`. Apps that do not embed untrusted content in sandboxed iframes are not affected. ### Workarounds Use `setWindowOpenHandler` on the parent `WebContents` to deny or constrain popups opened from sandboxed frames, or do not apply `allow-popups` to sandboxed iframes that render untrusted content. ### Fixed Versions * `43.0.0` * `42.5.2` * `41.10.4` ### For more information If you have any questions or comments about this advisory, email us at [security@electronjs.org](mailto:security@electronjs.org)
GHSA-hq2x-r82h-9wj4
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:GHSA-hq2x-r82h-9wj4
electron
Source reference: /affected/0/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 41.10.4
Source reference:
/affected/0/ranges - Prerequisites
- Not stated in this record
electron
Source reference: /affected/1/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 42.5.2
Source reference:
/affected/1/ranges - Prerequisites
- Not stated in this record
electron
Source reference: /affected/2/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 43.0.0
Source reference:
/affected/2/ranges - Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "SEMVER",
"events": [
{
"introduced": "0"
},
{
"fixed": "41.10.4"
}
]
}
],
"package": {
"name": "electron",
"purl": "pkg:npm/electron",
"ecosystem": "npm"
},
"database_specific": {
"source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/09/GHSA-hq2x-r82h-9wj4/GHSA-hq2x-r82h-9wj4.json"
}
},
{
"ranges": [
{
"type": "SEMVER",
"events": [
{
"introduced": "42.0.0-alpha.1"
},
{
"fixed": "42.5.2"
}
]
}
],
"package": {
"name": "electron",
"purl": "pkg:npm/electron",
"ecosystem": "npm"
},
"database_specific": {
"source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/09/GHSA-hq2x-r82h-9wj4/GHSA-hq2x-r82h-9wj4.json"
}
},
{
"ranges": [
{
"type": "SEMVER",
"events": [
{
"introduced": "43.0.0-alpha.1"
},
{
"fixed": "43.0.0"
}
]
}
],
"package": {
"name": "electron",
"purl": "pkg:npm/electron",
"ecosystem": "npm"
},
"database_specific": {
"source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/09/GHSA-hq2x-r82h-9wj4/GHSA-hq2x-r82h-9wj4.json"
}
}
]- Related CVEs
- CVE-2026-102673
Source reference:
/aliases
Publisher severity
high
Source reference: /database_specific/severity
- Event
- #29750 · Revision 1
- Added to Heist Feed
- Publisher date